I have a freshly rebuild 1988 460 in a mud truck, that i'm getting ready to drop dove heads on. This engine has the shallow dished early FI pistons with small valve relief. I was just wondering what kind of cam lift i could be safe with before having to worry about pistons to valve clearance? heads will be built with spring and rockers to match cam so i,m not worried about that. I need something that is going to build some power between 2500 and 6000 rpm. Also i was wondering if some one could give me a close idea of what kind of compression this combo will put out, i do be believe the pistons are still sitting the stock .030 below the deck.